JAMB Mathematics 2007 Objective — Question 23

Question 23 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.

Using the same matrix setup as the previous question (f(x)=3x-2, P and the 2x2 identity matrix I), evaluate f(P) again.

A. (8,3/-3,-2)
B. (6,3/-3,-2)
C. (4,3/-3,-2)Correct
D. (2,0/0,2)

Explanation

As in question 22, f(P) = 3P - 2I = (4,3/-3,-2). Note: the source scan shows this working printed twice; presented here as given.

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